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Table 2 from Comparison of peak expiratory flow measurement by Mini-Wright peak flow meter and electronic spirometer in healthy elementary school children | Semantic Scholar
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Mini-Wright Standard peak flow meter - Haag Streit
Mini-Wright Standard peak flow meter - Haag Streit
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Peak expiratory flow - Wikipedia
Peak Flow - Normal Values
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EN 23747 Peak Flow - Industry Standard for Peak Expiratory Flow measurement
EN 23747 Peak Flow - Industry Standard for Peak Expiratory Flow measurement
EN 23747 Peak Flow - Industry Standard for Peak Expiratory Flow measurement
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Mini-Wright Standard peak flow meter - Haag Streit